scholarly journals National-scale estimation of potentially harmful element ambient background concentrations in topsoil using parent material classified soil:stream–sediment relationships

2008 ◽  
Vol 23 (9) ◽  
pp. 2596-2611 ◽  
Author(s):  
J.D. Appleton ◽  
B.G. Rawlins ◽  
I. Thornton
2013 ◽  
Vol 8 (4) ◽  
pp. 044039 ◽  
Author(s):  
A Tyukavina ◽  
S V Stehman ◽  
P V Potapov ◽  
S A Turubanova ◽  
A Baccini ◽  
...  

2017 ◽  
Vol 7 (2) ◽  
pp. 248-256 ◽  
Author(s):  
Evgeny Dmitrievich Lodygin ◽  
Vasily Aleksandrovich Beznosikov ◽  
Evgeny Vasil'evich Abakumov

The background concentrations of hydrocarbons (HCs) were estimated for soils of the northernmost and northern taiga ecosystem of the Komi Republic. It was shown that accumulation and distribution of hydrocarbons in soil cover is regulated by following pedological factors: texture class, parent material and landform type and the type of soil forming process. In all studied soils of accumulative positions showed more pronounces accumulation of hydrocarbons than the soils of well-drained eluvial positions. Interprofile differentiation of hydrocarbons content is more expressed in clay-textured soils than sandy ones.


2002 ◽  
Vol 116 (3) ◽  
pp. 431-438 ◽  
Author(s):  
Marlen D Eve ◽  
Mark Sperow ◽  
Keith Paustian ◽  
Ronald F Follett

2014 ◽  
Vol 11 (1) ◽  
pp. 90-100
Author(s):  
Yigit Aydede

The present study intends to reveal spatial regularities between non-immigrant and immigrant numbers in two different ways. First, it questions the existence of those regularities when spatial scales get finer. Second, it uses pooled data over four population censuses covering the period from 1991 to 2006, which enabled us to apply appropriate techniques to remove those unobserved fixed effects so that the estimations would accurately identify the linkage between local immigrant and non-immigrant numbers. The results provide evidence about the existence of negative spatial regularities between non-immigrant and immigrant numbers in Canada at national scale.


2020 ◽  
Vol 71 (1) ◽  
pp. 192-200
Author(s):  
Anca-Luiza Stanila ◽  
Catalin Cristian Simota ◽  
Mihail Dumitru

Highlighting the sandy soil of Oltenia Plain calls for a better knowledge of their variability their correlation with major natural factors from each physical geography. Pedogenetic processes specific sandy soils are strongly influenced by nature parent material. This leads, on the one hand, climate aridity of the soil due to strong heating and accumulation of small water reserves, consequences emphasizing the moisture deficit in the development of the vegetation and favoring weak deflation, and on the other hand, an increase in mineralization organic matter. Relief under wind characteristic sandy land, soil formation and distribution has some particularly of flat land with the land formed on the loess. The dune ridges are less evolved soils, profile underdeveloped and poorly supplied with nutrients compared to those on the slopes of the dunes and the interdune, whose physical and chemical properties are more favorable to plant growth.Both Romanati Plain and the Blahnita (Mehedinti) Plain and Bailesti Plain, sand wind shaped covering a finer material, loamy sand and even loess (containing up to 26% clay), also rippled with negative effects in terms of overall drainage. Depending on the pedogenetic physical and geographical factors that have contributed to soil cover, in the researched were identified following classes of soils: protisols, cernisols, cambisols, luvisols, hidrisols and antrosols.Obtaining appropriate agricultural production requires some land improvement works (especially fitting for irrigation) and agropedoameliorative works. Particular attention should be paid to preventing and combating wind erosion.


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